Hey Andy, this was only a problem for the initial launch in December 2014. Average CPU usage by Duet has been reduced dramatically across multiple updates. One of the largest performance updates was just rolled out this week.

Uninstalling has never been hard, it's just a button in the computer app's settings. Some users didn't understand that the computer needed to be restarted to complete the uninstall. So we made that more clear in the pop up dialog.

@ Alex, did you enable Retina resolution for higher image quality from the menu bar? You should have a high fidelity image.